Hydratoic double-acting pump



Feb. 3, 1931. c. GAMER HYDRAULIC DOUBLE ACTING PUMP Eild May 5, 1928 INV EN TOR.

CHARLES GAMER.

m A TTORNEY Patented Feb. 3, 1 931 CHARLES GAMER, OI! FORT WORTH, TEXASmmmumc noUBLE-ac'rmc rum Application filed May 3, 192a. Serial No.274,735.

can be placed in a well of small diameter or small dimensions. Anotheradvantage is that there are no loose parts. Consequently, the pumps canbe used for great lengths of time without pulling the pumps. Anotheradvantage is that the packing cups are not so exposed as to be worn bythe sand or gravel. Other objects and advantages will be fully explainedin the following description and the invention will be more particularlypointed out in the claims. Reference is had to the accompanying drawingswhich form a part of this application.

Fig. 1 is a side elevation pf the improved pump, partly broken andpartly in section.

Fig. 2 is a vertical section of the well casing and other parts.

Fig. 3 is a horizontal section, taken on the dine 3-3 of Fig. 2.

. Fig. 4 is a top plan view.

Fi 5 is a detail view of the supply tank for t e pumps.

Similar characters of reference are used to indicate the same partsthroughout the several views.

This invention includes a power cylinder 1 and a pumping cylinder 2. Apiston 3 is operated in the power cylinder and a piston 4 is operated inthe pumping cylinderand both are operated by a common piston rod. 5. Thepiston rod 5 operates through a block 6 and packing 7 is provided forthe piston rod 5. The pump cylinder 2 has two discharge pipes. When thepiston 4 moves upwardly, the water is discharged through a pipe 8. Whenthe piston 4 moves downwardly, the water is discharged through a pipe 9.The

.2 b a joint 10. The

the piston 4 is moving downwardly. A check ton 3 or to fill the spacebelow the piston 3 in pressure through said pipes 8 and 9 are connectedabove the cylinder ipe 8 is provided with a c eck valve ll'whic 1s openwhen the iston 4 is moving upwardly, and closed w en valve 12 isprovided for the pipe 9 and this valve is closed when the piston 4 ismoving upwardly and open when the piston 4 is moving downwardly so thatwater will be forced out of the cylinder 4 through the pipe 9.

The piston 4 is opera-ted through the head 6 by the piston 3. The piston3 is operated by a fluid which is forced down through a pipe 13. Thisgives the upward motion of the piston 3. The fluid for forcing thepiston 3 downwardly is supplied through a pipe 14 which delivers thefluid in the cylinder 1 above the piston 3.

The intake of water or other fluid to be pumped consists of a port 15through the block 6 which is opened by a valve 16 when the piston 4 ismaking an upstroke. Another intake for the fluid to be pumped is a port17 in the head 18 of the cylinder. This port is closed by a valve 19when the piston 4 is making the upstroke and open when the piston 4 ismaking the down stroke so that the liquid will come through the port 17and fill the space above the piston 4.

The fluid for operating the piston 3 is operated or forced into thecylinder 1 by pistons 20 operating in cylinders 21. The cubical contentsof each cylinder 21 must be suflicient to fill the space in the cylinder1 above the piscylinder 1. The pistons 20 are provided with piston rods23 and 24 which are to be operated by any suitable pump jacks. Anyvacancy in the cylinders 21 is filled automatically by power fluid froma tank 22.

What I claim is,

1. A hydraulic pump comprising a head, a power cylinder connected tosaid head and provided with pumping mechanism-including a piston, ahead, a pump cylinder olf-set relative to said head and provided with apiston and intake and exhaust ports, a'common piston rod for saidpistons operating through said head, and means for supplying fluid headto said power cylinder alternately above and below the piston thereinincluding supply pipes operating through said heads, cylinders andpistons in said cylinders for driving fluid pressure through said pipes,one of said cylinders being adapted to contain suflicient fluid to fillthe space in said power cylinder above its piston and the other cylinderbeing adapted to contain enough fluid pressure to fill the space belowsaid power piston. c

2. A hydraulic pump comprisinga head, a power cylinder connected to saidhead and provided with a pumping mechanism including a piston, a pumpcylinder off-set relative to said power cylinder and connected to saidhead and provided with a piston. a common piston rod for said pistonsoperating through said head, means for supplying fluid pressure aboveand below the piston for said power cylinder including an overhead tankfor compressed fluid, cylinders connected thereto and provided withpistons in said cylinders, supply pipes connected to said cylinders andprojected through said head, and means for maintaining a supply of fluidpressure in said power cylinder through said head.

In testimony whereof, I set my hand, this 27th day of April, 1928.

CHARLES GAMER.

